Constructive
What is a constructive force?
Processes that cause the earths surface to build up.
What 2 processes are destructive forces
Weathering & erosion
What is weathering?
A process of breaking down rock into smaller pieces.
What is deposition?
The process by which sediment is laid down, dropped or deposited,
Would planting grass in soil increase erosion or decrease erosion?
Decrease erosion - plant roots help to hold soil together.
Where would deposition occur at the greatest amount? (See Slides for picture)
#4 At the bottom where deposition erosion slows down.
What is erosion?
It is a destructive force that moves weathered sediment to a new location to create new landforms
What is erosion?
The carrying away of broken down sediment from one place to another.
How are volcanoes a constructive force?
By how they are made and after an eruption the lava cools and makes new landforms.
Floods.
Destructive
Name the landform that forms from deposition at the mouth of rivers.
Delta
Name an example of a destructive force
Its the process by which rock is broken down, such as erosion and weathering either through violent actions of volcanoes and earthquakes or by the steady flow of a river.
What are the three main causes of weathering and erosion?
Water, Wind, and Ice (Gravity too)
Which event might be the result of the seismic activity from the calving of glaciers?
A. kettle B. deposition
C. tsunami D. moraine
Tsunami
How does a rivers velocity compare to a body of waters velocity?
A river's velocity is much higher than a body of water's velocity.
What can destructive forces be caused by?
Water, gravity, wind & glaciers.
What is responsible for creating the grand canyon?
Coloardo River
Due to - weathering and erosion
Also - tectonic plate movements
Which moraine formed as the glacier was advancing? (See slides for picture)
Location J
This moraine was growing as the glacier continued to scrape across the land.
What is a delta?
A land form that is formed at the mouth of a river?
Both
Which process is constructive? Weathering, erosion or deposition?
Deposition
What can landslides be caused by?
They can be caused by earthquakes, volcanoes. and gravity and water!
Organize the following options into 2 groups: Volcanic or Glacial:
(A) Basalt flows, (B) bedrock striations, (C) thermal geysers, (D) terminal moraines, (E) U-shape cross-section
Glacial = bedrock striations, terminal moraines, and u-shape in cross-section
Volcanic = basalt flows and thermal geysers
Describe how deposition works from start to finish!
Weathering happens first, the erosion moves the sediment and finally the sediment is dropped in a new place!
Building of land forms?
Constructive